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SN74LVC74PWR

更新时间： 2024-11-18 12:05:19
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德州仪器 - TI 总线收发器输出元件
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22页 1055K
描述
8-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

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SN74LVC74PWR 数据手册

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SN74LVCH8T245  
8-BIT DUAL-SUPPLY BUS TRANSCEIVER  
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS  
www.ti.com  
SCES637A–AUGUST 2005–REVISED FEBRUARY 2007  
FEATURES  
•
•
•
Control Inputs VIH/VIL Levels Are Referenced  
to VCCA Voltage  
•
•
•
Bus Hold on Data Inputs Eliminates the Need  
for External Pullup/Pulldown Resistors  
VCC Isolation Feature – If Either VCC Input Is at  
GND, All Are in the High-Impedance State  
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
Fully Configurable Dual-Rail Design Allows  
Each Port to Operate Over the Full 1.65-V to  
5.5-V Power-Supply Range  
BKR  
ESD Protection Exceeds JESD 22  
–
–
–
4000-V Human-Body Model (A114-A)  
200-V Machine Model (A115-A)  
1000-V Charged-Device Model (C101)  
DB, DGV, OR PW PACKAGE  
(TOP VIEW)  
RHL PACKAGE  
(TOP VIEW)  
V
DIR  
1
2
3
4
5
6
7
8
9
10  
24  
23  
22  
V
V
CCA  
CCB  
CCB  
1
24  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
OE  
23  
22  
21  
20  
19  
18  
17  
16  
15  
2
3
4
5
6
7
8
9
DIR  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
V
CCB  
21 B1  
20 B2  
19 B3  
18 B4  
OE  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
17  
16  
15  
B5  
B6  
B7  
GND 11  
GND 12  
14 B8  
A8 10  
GND  
13 GND  
14 B8  
11  
12  
13  
DESCRIPTION/ORDERING INFORMATION  
This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The  
SN74LVCH8T245 is optimized to operate with VCCA and VCCB set at 1.65 V to 5.5 V. The A port is designed to  
track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB  
accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation  
between any of the 1.8-V, 2.5-V, 3.3-V, and 5.5-V voltage nodes.  
ORDERING INFORMATION  
TA  
PACKAGE(1)  
ORDERABLE PART NUMBER  
SN74LVCH8T245RHLR  
SN74LVCH8T245DBR  
TOP-SIDE MARKING  
NJ245  
QFN – RHL  
SSOP – DB  
Reel of 1000  
Reel of 2000  
Tube of 60  
NJ245  
NJ245  
NJ245  
–40°C to 85°C  
SN74LVCH8T245PW  
TSSOP – PW  
TVSOP – DGV  
Reel of 2000  
Reel of 2000  
SN74LVCH8T245PWR  
SN74LVCH8T245DGVR  
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at  
www.ti.com/sc/package.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2005–2007, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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